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Active, not recruitingNCT07073820Updated Aug 25, 2026

A Study to Learn About the Study Medicine (Called PF-07868489) in People With Pulmonary Arterial Hypertension Who Have Previously Participated in a Clinical Study With PF-07868489

A Phase 2 interventional study of PF-07868489 in Pulmonary Hypertension, sponsored by Pfizer. Active, not recruiting at 27 sites in 10 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-08-25.

Sponsored by Pfizer · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
42
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this study is to learn about the long-term safety, tolerability and effects of the study medicine (PF-07868489) for the possible treatment of PAH. PAH is a condition in which there is high blood pressure in the arteries that carry blood from the heart to the lungs. This high pressure makes it harder for the heart to pump blood through those lungs, potentially damaging the right side of the heart.

This is an open-label study. Which means that both the healthcare providers and the study participants are aware of the medicine being given. This study is also an extension study with study medicine (PF-07868489). An extension study allows patients from an earlier clinical study (also called as qualifying study) to continue participating to assess long-term benefits and safety of the medicine.

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Conditions studied

  • Pulmonary Hypertension
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In context

Hypertension, Pulmonary

1,105 studies on the registry are indexed under Hypertension, Pulmonary; 234 are open to participants now.

This study's enrollment of 42 is above the median of 35 across 649 interventional studies indexed under Hypertension, Pulmonary.

Browse Hypertension, Pulmonary studies →

Lead sponsor

Pfizer is the lead sponsor of 3,244 studies on the registry; 139 are open to participants now.

Of its 582 completed or terminated interventional studies of FDA-regulated products, 381 (65%) have results posted.

Counted across the registry records on this site, refreshed daily.

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Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Eligibility criteria

This study is seeking participants who are:

  • aged 18 years or older at screening of the previous study and completed the required treatment duration with PF-07868469 and other assessments at the end of that study.
  • willing and able to abide with all scheduled visits, treatment plan, laboratory tests, lifestyle considerations, and other study procedures.
  • do not have worsening or hospitalization for worsening PAH during the qualifying study.
  • not on placement for a surgery to replace any tissue or part of the body (transplant), and planned surgery for PAH.
  • do not have an ongoing major health issue in the qualifying study, which in the opinion of the study doctor could make the participant not qualify for this study.
  • not suffering from or in the past have suffered from hepato-pulmonary syndrome (liver-related lung problem).
  • not currently prescribed or taking medicines called as GLP-1 agonist.
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Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
42 participants (actual)

Study arms

  • Experimental
    Open Label

    Participants will receive subcutaneous doses of PF-07868489 every 4 weeks

    Drug: PF-07868489

Interventions

  • DrugPF-07868489

    Participants will receive subcutaneous doses of PF-07868489 every 4 weeks

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What researchers measure

Primary outcomes

  1. Number of Participants with Treatment Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)

    Time frame: Baseline up to week 111

  2. Number of Participants With Change From Baseline in Laboratory Tests Results

    Time frame: Baseline up to week 111

  3. Number of Participants With Vital Sign Abnormalities

    Time frame: Baseline up to week 111

Secondary outcomes

  1. Number of Participants With Change From Baseline in Electrocardiogram (ECG) Parameters

    Time frame: Baseline up to week 111

  2. Change From Baseline in N-Terminal Prohormone Brain Natriuretic Peptide (NT-proBNP) Concentration

    Time frame: Baseline up to week 104

  3. Minimum Observed Plasma Trough Concentration (Cmin), as data permits

    Time frame: Baseline up to week 111

  4. Incidence of Anti-Drug Antibody (ADA)

    Time frame: Baseline up to week 111

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Study locations

27 sites
  • UCSF Health St. Mary's Hospital
    San Francisco, California 94117, United States
  • Heart and Vascular Center
    San Francisco, California 94143, United States
  • UCSF Helen Diller Medical Center at Parnassus Heights
    San Francisco, California 94143, United States
  • Mount Sinai Hospital
    New York, New York 10029, United States
  • Royal Prince Alfred Hospital
    Camperdown, New South Wales 2050, Australia
  • Pulmonary Hypertension Research Queensland Pty Ltd
    Auchenflower, Queensland 4066, Australia
  • HUB Hôpital Erasme
    Brussels, 1070, Belgium
  • UZ Leuven
    Leuven, 3000, Belgium
  • Guangdong Provincial People's Hospital
    Guangzhou, Guangdong 510080, China
  • The Second Xiangya Hospital of Central South University
    Changsha, Hunan 410011, China
  • Zhongda Hospital Southeast University
    Nanjing, Jiangsu 210009, China
  • Shanghai Pulmonary Hospital
    Shanghai, Shanghai Municipality 200433, China
  • Vseobecna fakultni nemocnice v Praze
    Prague, 12808, Czechia
  • Thoraxklinik-Heidelberg gGmbH
    Heidelberg, Baden-Wurttemberg 69126, Germany
  • Universitätsklinikum Regensburg
    Regensburg, Bavaria 93053, Germany
  • Universitaetsklinikum Giessen und Marburg GmbH
    Giessen, Hesse 35392, Germany
  • Universitätsmedizin Greifswald
    Greifswald, Mecklenburg-Vorpommern 17475, Germany
  • Universitaetsklinikum Carl Gustav Carus, Technischen Universitaet Dresden
    Dresden, Saxony 01307, Germany
  • Kobe University Hospital
    Kobe, Hyōgo 650-0017, Japan
  • St. Marianna University Hospital
    Kawasaki, Kanagawa 216-8511, Japan
  • National Hospital Organization Okayama Medical Center
    Okayama, 701-1192, Japan
  • Gachon University Gil Medical Center
    Incheon, Incheon-gwangyeoksi [incheon] 21565, South Korea
  • Seoul National University Hospital
    Seoul, Seoul-teukbyeolsi [seoul] 03080, South Korea
  • Severance Hospital, Yonsei University Health System
    Seoul, Seoul-teukbyeolsi [seoul] 03722, South Korea
  • Samsung Medical Center
    Seoul, Seoul-teukbyeolsi [seoul] 06351, South Korea
  • Hospital Universitario 12 de Octubre
    Madrid, 28041, Spain
  • Hammersmith Hospital
    London, Greater London W12 0HS, United Kingdom
08

References and documents

Individual participant data

Plan to share: Yes — Pfizer will provide access to individual de-identified participant data and related study documents (e.g. protocol, Statistical Analysis Plan (SAP), Clinical Study Report (CSR)) upon request from qualified researchers, and subject to certain criteria, conditions, and exceptions. Further details on Pfizer's data sharing criteria and process for requesting access can be found at: https://www.pfizer.com/science/clinical\_trials/trial\_data\_and\_results/data\_requests.

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Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 25, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT07073820
Lead sponsor
Pfizer
Responsible party
Sponsor
First posted
Jul 18, 2025
Start date
Nov 10, 2025
Primary completion
Aug 24, 2028 (estimated)
Completion
Aug 24, 2028 (estimated)
Last update
Aug 25, 2026

Study contacts

Pfizer CT.gov Call Center
study director · Pfizer

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Aug 2026. You cannot join it, but the record below documents what was studied.

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